Torque measurement device

Abstract

Provided is a torque measurement device including a stator in which a space portion is formed by a first annular ring and a second annular ring having protrusion pieces, a ring-shaped magnet disposed in the space portion, and a collector assembly including a first collector member and a second collector member to form at least one insertion space in which a magnetic element is disposed, wherein the insertion space is formed by bending an end of the first collector member and an end of the second collector member toward the space portion.

What is claimed is: 
     
       1. A torque measurement device comprising:
 a stator including a space portion formed by a first annular ring and a second annular ring having protrusion pieces; 
 a ring-shaped magnet disposed in the space portion; and 
 a collector assembly including a first collector member and a second collector member to form at least one insertion space in which a magnetic element is configured to be disposed, 
 wherein the insertion space is defined by an end of the first collector member and an end of the second collector member extended toward the space portion, and 
 wherein the first collector member and the second collector member comprise: 
 flux transfer surfaces disposed near the first or second annular ring; 
 opposite surfaces connected to the flux transfer surfaces and bent in facing directions; and 
 insertion surfaces connected to the opposite surfaces and bent toward the space portion between the first annular second annular ring and second annular ring configured to dispose the magnetic element therein. 
 
     
     
       2. The torque measurement device according to  claim 1 , wherein the first collector member is disposed near an outer surface of the first annular ring and the second collector member is disposed near an outer surface of the second annular ring. 
     
     
       3. The torque measurement device according to  claim 1 , wherein the first collector member is disposed near an inner surface of the first annular ring and the second collector member is disposed near an inner surface of the second annular ring. 
     
     
       4. The torque measurement device according to  claim 1 , wherein protrusions are formed at ends of the insertion surfaces of the first collector member and the second collector member in facing directions. 
     
     
       5. The torque measurement device according to  claim 1 , wherein ends of the insertion surfaces protrude inward from an imaginary line connecting an end of the first annular ring and an end of the second annular ring. 
     
     
       6. The torque measurement device according to  claim 1 , wherein ends of the insertion surfaces coincide with an imaginary line connecting an end of the first annular ring and an end of the second annular ring. 
     
     
       7. The torque measurement device according to  claim 1 , wherein the protrusion pieces of the first annular ring and the second annular ring are alternately formed. 
     
     
       8. A steering apparatus comprising the torque measurement device according to  claim 1 . 
     
     
       9. A vehicle comprising the torque measurement device according to  claim 1 .